OPPO R9s 没法加载https的图片

OPPO 手机Android6.0系统 Glide 4.0+ 版本 加载HTTPS的图片显示空白

图片显示空白

图片是保存在阿里云服务上，因此图片提供的地址都是https://开头的。整个测试过程一切正常，也准备发版本。忽然在OPPO手机上，图片不显示，空白一片。赶忙链接上手机进行DEBUG，能够看到一堆错误。有错误信息就好处理了。错误提示以下：

javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
        at com.android.org.conscrypt.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:328)
        at com.android.okhttp.internal.http.SocketConnector.connectTls(SocketConnector.java:103)
        at com.android.okhttp.Connection.connect(Connection.java:143)
        ...
        at aoo.run(SourceFile:446)
     Caused by: java.security.cert.CertificateException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
        at com.android.org.conscrypt.TrustManagerImpl.checkTrusted(TrustManagerImpl.java:324)
        at com.android.org.conscrypt.TrustManagerImpl.checkServerTrusted(TrustManagerImpl.java:225)
        ...
com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.connect(DelegatingHttpsURLConnection.java:89) 
        at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:25) 
        at alm.a(SourceFile:104) 
        ...
        at java.lang.Thread.run(Thread.java:818) 
        at aoo.run(SourceFile:446) 
     Caused by: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
        at com.android.org.conscrypt.TrustManagerImpl.checkTrusted(TrustManagerImpl.java:324) 
        at 
...
com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.connect(DelegatingHttpsURLConnection.java:89) 
        at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:25) 
...
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) 
        at java.lang.Thread.run(Thread.java:818) 
        at aoo.run(SourceFile:446) 
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而后进行google错误信息“Trust anchor for certification path not found.”，可以搜到的答案就是让你设置自定义证书。可我并不想设置证书。 再看时间都是2016年或2017年的，使用glide还在2.0+时代，将哪些解决方法用到工程里，都是报错的。

解决

1. 添加第三方库

api "com.github.bumptech.glide:okhttp3-integration:4.7.1"
annotationProcessor 'com.github.bumptech.glide:compiler:4.7.1'
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我使用的glide 4.7.1版本，全部添加这对应的版本也是4.7.1. 其中添加com.github.bumptech.glide:compiler是由于，不添加就会报错误

Failed to find GeneratedAppGlideModule. You should include an annotationProcessor compile dependency on com.github.bumptech.glide:compiler in your application and a @GlideModule annotated AppGlideModule implementation or LibraryGlideModules will be silently ignored
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记得同步项目下。

2. 添加OkHttpAppGlideModule类

类的内容：

import android.content.Context;

import com.bumptech.glide.Registry;
import com.bumptech.glide.annotation.GlideModule;
import com.bumptech.glide.integration.okhttp3.OkHttpUrlLoader;
import com.bumptech.glide.load.model.GlideUrl;
import com.bumptech.glide.module.AppGlideModule;

import java.io.InputStream;

import okhttp3.OkHttpClient;

@GlideModule
public class OkHttpAppGlideModule extends AppGlideModule {

    public void registerComponents(Context context, Registry registry) {
        OkHttpClient client = UnsafeOkHttpClient.getUnsafeOkHttpClient();
        registry.replace(GlideUrl.class, InputStream.class, new OkHttpUrlLoader.Factory(client));
    }
}

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3.添加UnsafeOkHttpClient类

类的内容：

import java.security.cert.CertificateException;
import java.util.concurrent.TimeUnit;

import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

import okhttp3.OkHttpClient;

public class UnsafeOkHttpClient {

    public static OkHttpClient getUnsafeOkHttpClient() {
        try {
            // Create a trust manager that does not validate certificate chains
            final TrustManager[] trustAllCerts = new TrustManager[]{
                    new X509TrustManager() {
                        @Override
                        public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
                        }

                        @Override
                        public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
                        }

                        @Override
                        public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                            return new java.security.cert.X509Certificate[]{};
                        }
                    }
            };

            // Install the all-trusting trust manager
            final SSLContext sslContext = SSLContext.getInstance("SSL");
            sslContext.init(null, trustAllCerts, new java.security.SecureRandom());

            // Create an ssl socket factory with our all-trusting manager
            final SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();

            OkHttpClient.Builder builder = new OkHttpClient.Builder();
            builder.sslSocketFactory(sslSocketFactory, (X509TrustManager) trustAllCerts[0]);
            builder.hostnameVerifier(new HostnameVerifier() {
                @Override
                public boolean verify(String hostname, SSLSession session) {
                    return true;
                }
            });

            builder.connectTimeout(20, TimeUnit.SECONDS);
            builder.readTimeout(20,TimeUnit.SECONDS);

            OkHttpClient okHttpClient = builder.build();
            return okHttpClient;
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
}

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4. 申明GlideMudle

在AndroidManifest.xml中添加申明：

<meta-data
            android:name="com.****.OkHttpAppGlideModule"
            android:value="AppGlideModule" />

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其中的路径须要修改成本身项目的路径。

成功

再次运行时，成功显示图片。

小插曲

1. 图片的缓存问题。

当把图片的https://路径修改成http://进行访问成功，再次进行https://路径访问，尽然成功显示了。一开始觉得是问题解决了，可是当手机重启后，https://路径仍是没法显示图片。

2. 一直是失败，显示图片空白。

可在添加了一次重复的混淆-keep public class * implements com.bumptech.glide.module.GlideModule. 尽然能够了。 而后把这个混淆删除后，也是成功的。 那么缘由只能是：glide的缓存问题。当屡次访问同一个https://失败后，glide将此https://路径设置为无效路径，再次进行访问时直接就显示失败了。而后修改了下混淆，glide又进行访问了。（做者的猜想，没有进行源码阅读，有不对的地方请指正。）

参考文章： blog.csdn.net/u010232308/…

// END 2018-6-8 小小的开心吧